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Ed Vielmetti
Ann Arbor, MI
Senior Ecosystem Engineer at Packet, an Equinix company. Ham radio: W8EMV
Recent Activity
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[Funklust] is a German student radio station from Uni FAU that broadcasts online and via shortwave radio. The shortwave signal is 24/7 on 15785 kHz from a transmitter in Erlangen, Germany. I was able to tune in via a KiwiSDR receiver [Vilradio] nearby, the above screen capture shows the settings... Continue reading
I started using [Obsidian](https://obsidian.md) about a year ago, and [switched away from Github Issues](https://vielmetti.typepad.com/logbook/2021/12/moving-from-github-issues-to-obsidian-for-daily-issue-tracking.html) about six months ago. So far so good. As is my habit, here's some notes on the process that will probably be more useful to me than they will be to you, but that's the nature... Continue reading
Posted Jun 29, 2022 at Logbook
Backups get worse over time, keep these in mind when designing your backup strategy. Good backups cover your working set. If you accidentally clobber something you're currently working on, you can get it back with minimum fuss. A good backup also provides you with some protection against catastrophic drive loss... Continue reading
Posted Jun 26, 2022 at Logbook
The pattern runs something like this. 1. Identify a shiny, new, and ferociously complex system that you'd like to know more about. 2. Bumble your way through the initial install, taking copious notes on things that will have changed by the next time you get around to look at them.... Continue reading
Posted Jun 26, 2022 at Logbook
Bryan! Yes, I have read Tom Standage's "The Victorian Internet" https://tomstandage.wordpress.com/books/the-victorian-internet/ and I was prepared to reread it but it's aged out of our library system (should be a copy via inter-library loan though).
Toggle Commented Jun 12, 2022 on Count me in every time. at Dracula Blogged
Count me in too! I'm a softie for stories that are told by telegram.
Toggle Commented May 27, 2022 on Count me in every time. at Dracula Blogged
Date: Wed, 8 Jan 86 17:30:26 EST From: Edward_Vielmetti%UMich-MT...@MIT-MULTICS.ARPA Subject: Adding Memory to a Zenith Z-151 with RDISK To: iph%Purdu...@arthur.Purdue.EDU I have the RDisk unit installed, and it works quite nicely. Available memory is 640K + a 640K ramdisk. I haven't experience any problems in the operation of it; installation... Continue reading
Posted May 20, 2022 at Logbook
Morning coffee and wifi, then turn all the computers off and go for a walk or a bike ride (unsure which at this point, probably a walk) to hit the N8DUY 145.15- repeater for the 800a morning net that runs... Continue reading
Previously: [2019](https://vielmetti.typepad.com/w8emv/2019/10/2019-software-defined-baseball-radio-listening-recap.html) and [2018](https://vielmetti.typepad.com/w8emv/2018/06/kiwisdr-and-am-baseball-radio-dx.html). 2022-04-16: The great weird idea is to put together a guide for KiwiSDR and WebSDR listeners for tuning into remote baseball games. SDRs come and go, so any guide that is too specific about exact IP addresses is probably a bad idea. However, I should be... Continue reading
Thanks VOTL! Reception S9 into KiwiSDR K9MQ, Chicagoland / northwest Indiana. I tried to get my new Youloop / Airspy HF+ / SDRPlusPlus / Android phone combo running to tune this in, but by the time I had the software dialed in the transmission had ended. Still figuring out a few things, which I will write up in due course.
1 reply
Some installation notes from getting Asahi Linux (alpha) running on an M1 MacBook Air (Apple Silicon). Asahi Linux is a Linux distribution for Apple Silicon. The alpha installer release came out on 18 March 2022, and being brave, I decided to give it a try. Before you do the install,... Continue reading
Posted Mar 18, 2022 at Logbook
I started using Github Issues as a personal issue tracker in 2012. The first issue was "Replace mobile phone with new device - iPhone, Android, or burner". It took me months to decide what to do. Since then, I've opened over 10,000 other issues with small or large details of... Continue reading
Posted Dec 30, 2021 at Logbook
The issue of the {day, week, month, year} is `log4j`, a logging library for Java that turned out (unbeknownst to the world) to have a lot more subtle power than was obvious on the surface. When looked at closely, this subtle power turned into a vector for remote code execution... Continue reading
Posted Dec 12, 2021 at Logbook
I'm working on a `rolodex` command line tool, to help manage a set of Markdown files that each represent some contact information about a person or organization. This is mostly to jog my mind about how I know people. With the pandemic going on, it's harder than ever to casually... Continue reading
Posted Nov 29, 2021 at Logbook
One of my Raspberry Pi 4's was crashing mysteriously every few weeks. I'd get this error message ``` kex_exchange_identification: Connection closed by remote host ``` when trying to log in. It would respond to pings, though, so something was still up. That particular Pi is booting from a USB device.... Continue reading
Posted Nov 12, 2021 at Logbook
On Sunday, June 20, 2021 from 8:15 pm - 11:05 pm the Washtenaw County Skywarn net was activated for a series of severe thunderstorm warnings. The net stayed in "condition green" the entire time, with WD8EOC relaying National Weather Service reports, but with no significant reports of damage in the... Continue reading
Summary: The Debian 10.10 distribution does not successfully boot on arm64 (aarch64) EFI systems, according to a [report by Cypou] who noted it as they were testing the [ESXi Arm Fling]. This is in part because Debian [stopped arm64 support for shim-signed] due to toolchain problems that made it difficult... Continue reading
Posted Jun 21, 2021 at Logbook
Steve W8AYN ran the Washtenaw Skywarn net using the WD8EOC call sign on Saturday 12 June 2021. The net started at just before 8:00 p.m. when the National Weather Service issued a severe thunderstorm warning for the county, and continued until just before 9:15 p.m when the warning was allowed... Continue reading
June 2021 has been a hot month, which means I am working in a hot attic most of the day. Based on what I learned last summer this is what I should be doing this year. Bring ice water to the attic. I should always have something cool to sip... Continue reading
Posted Jun 8, 2021 at Logbook
I have a single-node Kubernetes system running on a 4GB arm64 Jetson Nano, using `kind` (Kubernetes in Docker). This is the smallest configuration I can reasonably expect to have a functioning Kubernetes control plane on. The device regularly throws errors of the type ``` 2021-05-23 19:00:21.333267 W | wal: sync... Continue reading
Posted May 29, 2021 at Logbook
It's summer, and that means the attic gets hot. I'm looking to get some kind of easy way to check the attic temperature from afar, so that I can keep tabs on it, and so that I can adjust the fans and the windows appropriately. This is really basic telemetry,... Continue reading
Posted May 20, 2021 at Logbook
I misspelled "cpu" as "cup" up there, fix that. The installation the Pi 4 didn't require the "deadsnakes" routine, because Python 3.7 was the system python3. On the Pi, I'm waiting for compiling grpc, h5py, and wrapt. I know there are wheels for at least a couple of those at Linaro, but I'm going to wait for the system to grind through them for now.
Toggle Commented Feb 27, 2021 on getting Tensorflow running on arm64 at Logbook
1 reply
Some incomplete notes, which I'll later turn into a proper post. I'm running on a 160-core Ampere Altra, but these instructions should work for any arm64 Ubuntu 20.04 system you have in mind. I'll try next on an 8GB Raspberry Pi for completeness. In order, you need the following: *... Continue reading
Posted Feb 25, 2021 at Logbook
I have a couple of good sources of ambient noise, in order to give me some background sounds to think with or think against. In the attic, I have a scanner which picks up local ham radio traffic. Mostly in... Continue reading
Learning to solder looks like a good pandemic exercise. I was looking for soldering station kits with a wide range of tools that you'd need all bundled together. Bill Earl's [excellent guide](https://cdn-learn.adafruit.com/downloads/pdf/adafruit-guide-excellent-soldering.pdf) from Adafruit looks helpful. Of course in an... Continue reading